Bunsen burner.



L. J. STRAUSE & 0. SPAHR.

BUNSEN BURNER.

APPLICATION IILED urns, 1914.

Patented Oct. 20, 1914.

h! 0 m 7 9M 8 Mai U a a m MM l. m A nuumuuuuv w a all ikl y of Philadelphia, I

have invented a certain new and useful Improvement in Bunsen Burners, of wh chthef UNITED STATES PATENT OFFICE.

LOUIS J. STRAUSE Am) o'r'ro SPAHR,

OF PENNSYLVANIA.

BUNSEN BURNER.

. Specification of Letters Patent.

OEIPH'ILADELPHIA, PENNSYLVANIA, ASSIGNORS T0 STRAUSE GAS mow co, OF'PHILADELPHIA, PENNSYLVANIA, A oonronerxon j Patented oat. 20,1914.

Application fi1ed am l- 33914. Serial no. 310,229.

To all 107mm it may concern Be it known that we,

States, and residents ofPhiladelphia, county State of Pennsylvania,

following is a specification.- I I Our invention rel ates to what are commonly known as Bunsen burners and more particularly to that type thereof adaptediparticularly for use in connection with self-heating gas irons and has for. superior structure vwhich may be readily adapted for any gas whether natural or manufactured and which may be used to advantage with 'the gas at any pressure.

Other objects of our improvement will appear from the description hereinafter and the features of novelty will be pointed out in the appended claims.

Reference is to be had to the accompanying drawings in which an example of our invention is shown and i11.whic h- Figure 1 is anexterior view thereof; Fig. 2 is a central longitudinal section showing a part of the mixing tube and. a part of the usual tube whereby, the burner is connected with the source of fuel supply; Fig. 3 is a detail view of the nozzle forming part of our inventlon; Fig. 1 is ahorizontal section on the line 1- 1 of Fig. 1; Fig. 5 is a sectional perspective of a connecting or coupling ring included in ourfconstruction; Figs. 6 and are sectional views of two different forms of our invention and F1g. 8 1s a detail new of a substitute tube connection which may be used with Fig. 7.

In the drawings 10 represents the nipple which is adapted to receive thecustomary flexible or other tube 11 whereby connection with a source of fuel supply is secured and which is provided with a longitudinal passage 12 having its innerend in communication with an enlarged, internally screwthreaded chamber 13f I'Ihis. chamber 13 is adapted to receive the externally screwthreaded neck 11 of the nozzle 15fwhich is formed with an annular shoulder 16 adapted .to engage the endsurface of the nipple 10 and limit the inward screwing movement of the neck 14 into. the. chamber 13 and to'thu's firmly secure the said nozzle in operative position. In order that the neck 14 of'the nozzle 15 may be readily screwed LOUIS J. SrnaUsn and Orro SPAHR, both citizens of the Unlted" its object to provide. a

The said screw-threaded portion 22 is adaptinto said chamber weprefer toprovidethe free end of sald neck with a smooth, slightly reduced unthreaded portion 14 which enters the chamber 13 first and serves-to make the find ng ofthe cooperating threads a simple and easy matter. The said nozzle 15 is pro-,

vided with. a passage 17 and a reduced outlet18 thetwo combined forming a continuous channel whereby communication 1s es-y I tablished between the passage 12 of thenipa ple 10 and the; interior of an externally;

screw-thread(=-.d air hood 19, the latter being I formedwith the customary air. inlets .20.v

This air-hood 19 is made as a separate element from the nipple 10 andis connected. therewith by means of a ring or sleeve 21 having an internally screw threaded portion 22 extending inwardly for a short distance from one endthereof as indicated in Fig. 5.

ed for engagement with the screw-threads which extend externally throughout the length of the air-hood 19. At an intermedi ate pointthe said sleeve or collar 21 is pro-. vided with an internal, annular flange 23 adapted to engage a'flange24 of the nipple 10 and rotatable thereon to draw. the airhood l9 againstthe end surface thereof to firmly secureor'couplc said hood and nipple together. In the preferred form the internal fiange23is screw-threaded for engagement with a screw-threaded portion 25 of the nipple 10 for the purpose to be described hereinafter. be provided with one or more knurled .or

If desired the sleeve orring 21 may v otherwise roughened portions21 'to provide h for a'ready manipulation thereof. In order that the amount of airwhich is admitted to the interior of the air-hood 19 may be regulated as desired, we provide the shutter, or

and may in consequence be manipulated thereon to cover or uncover the air inlets 20 more or less to regulate the intake of'air. In the preferred formthe ring or shutter 26 is partly slotted or completely split as indi ring 26 which is in screw-threaded engage" iment with the outer surface of said air-hood minute and fine adjustment of the shutter relatively to the air inlets is possible and the,

cooperating screw threads onthe air hood and shutter serve to positively maintain said shutter in any adjusted position. This ring or shutter 26 may also be provided with knurled or otherwise roughened portions 26* whereby a ready manipulation thereof is made possible. The said air-hood in the example shown is screw-threaded for connection with the customary mixing tube 27.

In constructions of the kind to which the present invention relates it is ofttimes necessary to substitute nozzles 15 having outlets or channels differently proportioned for different purposes such as for use with gas under different pressures or for use either with manufactured or natural gas. Under such conditions it will readily be apparent that once theproper nozzle has been incori p'orat'ed in the structure it is essential that the same be not readily interfered or tampered with and to protect it against undesiredmanipulation. With the present construction it will beseen that when the parts are completely assembled the said nozzle 15 is adequately protected by the air hood 19, which extends beyond the same. If this airhood 19 should be disconnected for any.

purpose, which maybe accomplished either by rotating the sleeve or ring 21 on the nipple 10-, or by rotating the air-hood 19 in said sleeve 21, the latter in its normal position on the saidnipple 10 will project below the end of the same and will thus still protect the said nozzle 15 against undesiredmanipulation. It will be seen that in said normal position the screw-threads on the flange 23 are below and out ofengagement with the threads 25 so that said sleeve or collar 21 is freely rotatable on the nipple 10 as described, the flange 24 preventinga separation of said sleeve 21 from the said nipple in one direction. When ready access to the nozzle 15 is desired for any purpose, the airhood 19 is first disconnected from the sleeve 21 to free the latter and. permit it to be rotated in a direction to operatively connect said sleeve 21 with the threads 25 and cause it to move along the same to a position where its edge orend which normally pro jects beyond the nipple 10 no longer thus projects and in consequence leaves the nozzle 15 more freely accessible. The exit end of said nozzle 15 is preferably made coneshaped as shown best in Fig. 8, so that the recessed end of a suitable tool or implement may be placed overthe apex of said cone and said tool given a slight blow or succession of blows whereby the diameter of the outlet 18 at its exit end may be easily contracted or reduced to secure a perfect operation with all kinds of fuel gas under all con ditions. Similarly, by inserting a tapered tool into the end of the outlet 18 and tapping said tool the exit endofsaid outlet 18 may. be readily spread or enla'rged if for any reason this should become necessary or advantageous. It will readily be apparent that the above couldnot be as satisfactorily accomplished if the nozzle were, for instance, rectangulan and further that with our improved nozzle it is unnecessary to substitute one complete nozzle for another when slightly different outlets are desired. in addition to'this by having said nozzle 15 detachably secured in operative position, the same becomes readily interchangeable when necessary and a nozzle of proper size to meet f the existing conditions may thus easily be ;incorporated in the burner. It is therefore gonly necessary to supply different nozzles to ;meet varying conditions instead of different icomplete burners.

l The threads 25 on the nipple l0 and the {external threads on the air-hood 19 preferia'bly coiperate insuch a manner that the idanger' of accidentally disconnecting the l'parts through an accidental manipulation j thereof is {vent such'accidental dislocation or disconjne'ction' the deviceis so constructed that the jend of the tube 11 may be brought-into en- ;gagement with the one end of the sleeve or collar 21. This tube both by its frictional engagement with said sleeve or collar 21 .:and" because it acts as a stop against move- .ment in one direction lengthwise of the nipple will thus prevent rotation of said sleeve or collar 21. That portion of the said'sleeve' or collar 21' which in the illustration is above the flange 23 normally covers the threads 25 and thus protects the same against injury.

In the form-of our improvement shown in Fig. 6, the nipple 10 screws directly into the one end of the air hood l9 and the sleeve 21 has been omitted. By simply unscrewing said nipple 10' from said air hood 19 the nozzle 15 is carried along with said nipple and is exposed and made readily accessible. Otherwise this form of our invention may be the same asthe form first described.

In the construction shown in Fig. 7 the nipple 10 is provided with an externally screw-threaded neck 10 adapted to screw into a member 10 having screw threads 25 corresponding to the threads 25 of Figs. 1 and 2 and detachably carrying a nozzle 15 similar to the nozzle 15 hereinbefore described. The said member 10 is also adapted to support a sleeve corresponding to the sleeve 21 and adapted to connect the nipple 10- with an air hood and to coiiperate with the threads 25 I the same way as in Figs. 1 and 2. In many cases it is undesirable to connect the burner with a" source of fuel supply by means of a tube, the on'e end off which slips over a nipplesuch as the'nipple 10 owing to the fact that the tube and nipple sometimes become accidentally disconnected. Under such conobviated. To still furtherpreto expose the nozzle 15 in ditions and wherever a more reliable'connection is desired,-thei nipple 10 is simply unscrewed from the member 1O after which the screw threaded end 1 1 ofthe tube 11 .may readily be connected therewitlnthus sechangeability of the parts; VVhen the ordinary slip over connection is desired thenipple 10 is simply reconnected with the member 10 It will thus be seen easily taken apart and connected and in which the vital parts are thoroughly protected against undesired manipulation or tampering and which may be readily adapt-' ed to meet all conditions of use.

Various changes in the specific form shown and described may be made within the scope of the claims without departing from the spirit of our invention.

We claim:

1. A Bunsen burner comprising a nipple, a nozzle thereon, an air hood surrounding said nozzle and abutting against the end of said nipple and means for detachably securing said nipple and air hood together.

2. A Bunsen burner comprising-a nipple, a nozzle detachably. carried thereby, an air hood surrounding said nozzle I abutting against the end of said nipple and a collar rotatably mounted on said nipple for detach: ably securing the air hood thereto. c

3. A Bunsen burner comprising a nipple,

a nozzle detachably carried thereby, an air hood, a coupling ring swiveled on and normally extending beyond said nipple and adapted to connect the air hood thereto and cooperating means on said nipple and couplingring respectively whereby the latter may be moved back on said nipple to expose said nozzle, whereby the latter may be freely detachable.

i. A Bunsen burner comprising a nipple,

a flange on said nipple, a nozzle detachably secured to said nipple, an air hood surrounding said nozzle, a coupling ring normally extending beyond said nipple and adapted for connection with said air hood, an internally screw threaded ring adapted to rotate on the flange of said nipple whereby said coupling ring is swiveled on the latter andscrew threads on said nipple adapted to cooperate with said screw threaded internal v flange whereby the coupling ring may be moved back on the nipple to expose said nozzle whereby the latter may be freely detached.

5. A Bunsen burner comprising v lattermaybe freely detached. that all forms'of our invention provide structures which may be 'with air inlets, @c'oupling 7 ring said nipple, screw flange on said coupling a nipple,

a flange on said nipple, a nozzle detachably secured to said nipple, a screw hood surrounding said nozzle, a coupling ring normally extending beyond said nipple providedwith screw threads adapted to e115 gage the screw threadsof said air hood for connecting said-air hood and 1 nipple togeflmlh n n ly screw threaded flan on said coupling ring rotatableon the flange of said'nipple whereby'said coupling ring is threadedair 1 swiveled on the latter and screwthread's on said nippleadapted to cooperate with said internally screw threaded flange whereby the coupling ring may nipple to expose said nozzle wherebyfithe ,6. A Bunsen burner comprising a nipple, a flange on said nipple, a nozzle detachably secured thereto, anexternally screw coupling ring extending beyond said nipple provided with screw threads adapted to engage the screw threads ofsaid air hood for. connecting said air hood and nipple together, an internally screw threaded flange on said coupling ring and screw threads on said nipple adapted to cooperate with said threaded flange whereby H internally screw the coupling ring may be moved back on the nipple, said screw threads on said nipple terminating at a distance, from the flange thereof whereby an annular recess is formed on said nipple in: which said screw-threaded flange is freely rotatable.

7 A Bunsen burnercomprising a nipple, a nozzle detachably carried thereby, an ex? ternally screw threaded air hood provided a flange on said nipple, a normally extending beyond,

threads in said project be'move'd back onjthe 7 I thread-' ed a1r hood SUI'I'Olllldlllg sa d nozzle," (a;

ing portion adapted to cooperatewith the screw threads of the air hood for securing said air hood and nipple together, an interv nally screw threaded flange on said ring, adapted to rotate on the flangeoi' said nipple, screw threads on said nipple adapted to be engaged by saidinternallyjscrew threaded flange whereby said coupling ring may be moved back on the nipple and means f i i cooperatingwith, said a1r inlets for adjust ing theamount 'of'air admitted to the air hood.

8. The combination of a tube adapted for I connection with a source of fuelsupply, a x

nipple extending into said tube, a nozzle carried thereby, an airhood surrounding said nozzle, a coupling ring: normally extending beyond said nippleand adapted to connect said air hood and nipple together and cooperating screwithreads on said couplinga'ing and nipple respectively normally out of engagement with each. other and adapted to be brought into cooperating engagement for'moving said coupling ring back on the nipple, said tube being arranged to abut against said couplingring to prevent rotative movement thereof and movement thereof lengthwise of the nipple in one direction. v

9. The combination of a nipple, an air hood, movable means for detachably securing said nipple and air hood together and a fuel conducting tube extending over said nipple into engagement with said means.

whereby unintentional actuation of the lat ter is prevented.

10. The combination of a nipple, an air hood or the like, a coupling ring rotatably mounted on said nipple for detachably securing said nipple and air hood or the like together. and a fuel conducting tube extendingi over said nipple into frictional engage ment with said coupling ring, whereby unintentional actuation of the latter is prevented. p

In testimony whereof, we have hereunto set ourhands'in the presence of two subscribing witnesses.

LOUIS J.- STRAUSE. OTTO SPAHR. v Witnesses:

CHARLES STIoHLER, JACK S. BERNSTEIN'.

Copies of this patent may bev obtained for five cents each, by addressing the Commissioner of latents;

Washington; 1); ca 

